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3931349
SMART AND MODERN MATERIALS AND ADHESIVE
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SMART AND MODERN MATERIALS AND ADHESIVE
NEW AND SMART MATERIALS
Smart materials respond to their environment and allow us to personalise products.
They improve its performance without increasing its complexity
Examples: Smart grease gives the closing mechanism of a CD player a beautifully smooth action.
Many new materials allow existing products to be miniaturised or give us the ability to dramatically improve their performance.
Optical fibres can transport light over 200km and are used in telecommunications , computers and in surgery.
ADHESIVE
SCHOOL ADHESIVES
PVA (Polyvinyl acetate)
What is it? White, water-based adhesive.
How does it work? Soaks into surface, creating a strong bond.
No care needed.
Synthetic Resin
What is it? Waterproof adhesive
How does it work? Chemical hardening occurs when mixed with water.
Will set in water. Don't wash down the sink as it will block the pipes!
Epoxy Resin
What is it? Versatile resin adhesive
How does it work? When mixed with hardener, becomes very hard substance
No care needed
Contact Adhesive
What is it? Solvent adhesive
How does it work? Both surfaces are coated with this, and allowed to become touch-dry before being placed together
Solvent fumes are dangerous! Esure good ventilation
Solvent Cement
What is it? Clear solvent
How does it work? Dissolves sticky platics so they become sticky
Solvent fumes are dangerous! Ensure good ventilation
Latex Adhesive
What is it? Rubber-based adhesive solution
How does it work? Sticks together fabrics and other substances
Smells unpleasant but fumes are not dangerous. Some people are allergic to latex.
Hot Melt Glue
What is it? Usually polythene glue
How does it work? Heated and placed in an injector 'gun' for easy applying
The glue
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